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The Iris Project

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DragonMoffon

4/20/2025

Instant Crash when using 330 core.

I was following the tutorial in the iris docs, but converted it to using 330 core, and now it crashes on successful load. I only have composite and textured shaders currently.

message.txt

Célestin

4/20/2025

OpenGL 3.2 how to fix crash ?

Hello, I have a crash that occurs when I try to run Oculus (the latest version). With version 1.6.13, I had no problems, but it seems that now you no longer support OpenGL 3.2. How can I fix this problem and be able to play with shaders (as before)? Oculus is the unofficial version of Iris (for Forge), but works in the same principle. The author told us that we should move towards Iris support....

crash-2025-04-20_08....

RADEON

4/19/2025

Iris doesnt want to load any shader

idk why, but it outputs an error into the chat :

net.minecraft.server.ChainedJsonException: Invalid shaders/core/basic.json: Non [a-z0-9/._-] character in path of location: minecraft:basic_tessControl.tcs

my modlist here: https://gnomebot.dev/paste/mclogs/XNNK918...

Solution:

i found the mod that stops the shader from loading

wasd

4/18/2025

Potato Shaders

Im using the correct fabric version and I have Iris and Sodium installed and yet it crashes, why is that?

Solution:

change the 2.13 to 6.7

|Blaz|

4/17/2025

Using iris causes flickering

When i use iris all entities start flickering. Tried different settings (on sodium and Iris), removing all other mods yet no difference. Using sodium itself with other mods is fine but only putting in Iris causes the flickering.

Jax

4/17/2025

Optifine skybox using iris

Iris talks about optifine skyboxes and their ability to use them, how exactly do you do that? i have iris and sodium installed have the skybox in resource pack and i dont know exactly where the compatability comes in

Rentora

4/17/2025

shaderpack failed to load

hey there, i'm using a pretty hefty amount of mods, including distant horizons with photon shaders which are advertized as compatible with distant horizons. i'm using the physics mod as well which can cause some issues with shaders but i've been able to run this mod combination previously without problem. currently about 9/10 times when i open the game i get the message "the shaderpack failed to load! please report the error to the developper" the info included in the message is the following: prepare.vsh: prepare.vsh: 0:38(63): error: `base_color' undeclared 0:38(63): error: type mismatch 0:38(38): error: no function with name 'linear_step' 0:38(34): error: no function with name 'sqr'...

Solution:

update: i just downloaded the latest photon commit from the github page and it works now!

latest.log

Lugubrious_DragonLord(III)

4/16/2025

Null Pointer Exception at startup

Hey, I understand this may not be an Iris issue, but I'm not a shader guy so any help to narrow it down is much appreciated. Here's the error that appears on client startup: ``` [18:25:42] [Render thread/ERROR]: Failed to create shader rendering pipeline, disabling shaders! java.lang.NullPointerException: null at knot/org.lwjgl.system.Checks.check(Checks.java:188) ~[lwjgl-3.3.3.jar:?]...

Doctor Who Mine Imator

4/16/2025

Minecraft Crashing, every time I create or open a world

I have The mods installed. I was trying to play it, but every time I do it, the game crashes when I create or even open a world can someone help me to fix this problem?

Maggotzinmymind

4/16/2025

bsl shaders

im trying to download bsl shaders on modrinth but i cant find ".mincraft/shaderpacks". can anyone help?...

Kenya

4/16/2025

Disco

I dont know what is this

CLOUDY

4/16/2025

Shaders not Working

-Using ATLauncher -Using Minecraft: Remade & Remastered vers 1.21 I've tried using all of these shaders here and each one does not work, and it says in the chat to tell Iris the issue and to "copy this" so i keep getting this error when i try each of the shaders in the screenshot. Mixin transformation of net.irisshaders.iris.pipeline.programs.SodiumShader failed...

Solution:

download sodium 0.6.13 and iris 1.8.8, then delete chunksfadein

Cyclostyle

4/15/2025

It crashes my game when i try to launch

the only mods i have are: fabric api, sodium, and iris shaders when i try to launch the game without iris (only sodium) it works fine, but as soon as i add this mod in and try launching the game, my game instantly crashes when launched...

Flammensturm

4/14/2025

Shaders absolutely broken

Can anyone help me? This is literally unplayable, everything glitches out and sometimes my screen just turns completely white. I'm playing Minecraft 1.21.5 with Iris 1.8.11 and Sodium 0.6.13 using Complementary Reimagined r5.4

Dr. Oetker

4/14/2025

Multi-colored blocklight not working when looking away on BSL Shaders

When looking away from a colored light it just turns the default orange, is there a way to fix this?

Solution:

BSL uses bloom-based colored lights. These are screen-space effects, which means it'll lose its effect once you look away. You need something like Rethinking Voxels with world-space colored lights for it to persist off-screen.

Etie 金木

4/13/2025

Every Shader I have not working

Client: -Lunar Client Mods: - iris-fabric-1.8.12-snapshot+mc1.21.5-local.jar...

Solazium

4/13/2025

Bug shader packs select in game 1.21.1

Hi, I have a bug with iris, in game I can't see the shader selection while on the main menu I can. This must be a mod from the list, at least I think...

modlist.txt

Seal

4/13/2025

Crashing After Update for 1.21.5

When I select Fabric to launch with Iris Shaders installed. It is crashing the game. When I do not use the Fabric Loader (which I was using on 1.21.4). It works fine. I can copy and paste the crash report if needed. Thanks...

Solution:

and nuke clouds.png

Duke

4/12/2025

switching shaders breaks Distant horizons

im not sure why but after a few switches u can no longer see DH chunks anymore

Acer (Alex)

4/12/2025

Photon Dev branch crashes the JVM on Intel Arc

Yeah

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The Iris Project

This server is all about the development and community around Iris Shaders!

The Iris Project

This server is all about the development and community around Iris Shaders!